<?php
/**
 * Copyright (c) [2019] [吴跃忠]
 * [selibra] is licensed under the Mulan PSL v1.
 * You can use this software according to the terms and conditions of the Mulan PSL v1.
 * You may obtain a copy of Mulan PSL v1 at:
 * http://license.coscl.org.cn/MulanPSL
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
 * PURPOSE.
 * See the Mulan PSL v1 for more details.
 */

namespace ckeeper\services;

/**
 * Zookeeper服务，用于调用Zookeeper接口
 */
interface ZookeeperService
{

    /**
     * 获取子节点
     * @param string $path
     * @param null $watcher_cb
     * @return array
     */
    public function getChildren(string $path, $watcher_cb = null): array;


    /**
     * 获取数据
     * @param string $path
     * @param null $watcher_cb
     * @return array|string
     */
    public function getValue(string $path, $watcher_cb = null): array|string;


    /**
     * 获取zookeeper实例
     * @return \Zookeeper
     */
    public function zookeeperInstance(): \Zookeeper;
}
